Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match. Sideboard rules and restrictions for some formats are modified by the Magic: The Gathering Tournament Rules (found at WPN.Wizards.com/en/rules-documents).
April 27, 2018 · Dominaria
Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.
September 30, 2011 · Innistrad
Each player may also have a sideboard, which is a group of additional cards the player may use to modify his or her deck between games of a match.
June 17, 2011 · Commander 2011
Each player may also have a sideboard, which is a group of additional cards the player may use
February 4, 2011 · Mirrodin Besieged
Each player may also have a sideboard, which is a group of additional cards the player may use to modify his or her deck between games of a match.
October 1, 2010 · Scars of Mirrodin
Each player may also have a sideboard, which is a group of additional cards the player may use
February 1, 2010 · Worldwake
Each player may also have a sideboard, which is a group of additional cards the player may use to modify his or her deck between games of a match.